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Diffstat (limited to 'testing/web-platform/tests/intersection-observer/observer-callback-arguments.html')
-rw-r--r-- | testing/web-platform/tests/intersection-observer/observer-callback-arguments.html | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/observer-callback-arguments.html b/testing/web-platform/tests/intersection-observer/observer-callback-arguments.html new file mode 100644 index 0000000000..6e816969d0 --- /dev/null +++ b/testing/web-platform/tests/intersection-observer/observer-callback-arguments.html @@ -0,0 +1,28 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>IntersectionObserver: callback arguments</title> +<link rel="help" href="https://w3c.github.io/IntersectionObserver/#notify-intersection-observers-algo"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<div id="log"></div> +<script> +"use strict"; + +async_test(t => { + const io = new IntersectionObserver(function(entries, observer) { + t.step(() => { + assert_equals(this, io); + assert_equals(arguments.length, 2); + assert_true(Array.isArray(entries)); + assert_equals(entries.length, 1); + assert_true(entries[0] instanceof IntersectionObserverEntry); + assert_equals(observer, io); + + io.disconnect(); + t.done(); + }); + }); + + io.observe(document.body); +}, "Callback is invoked with |this| value of IntersectionObserver and two arguments"); +</script> |